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Court rules Oyster hack can be revealed

Judge sanctions release of full hack details

A Dutch judge has ruled that researchers can publish details of how to
crack
the Oyster card used on London's public transport system.

NXP, which makes the Oyster card, had taken out an injunction to stop
Professor Bart Jacobs and colleagues from Radboud University in Nijmegen from
publishing their research into security flaws in the payment card.

The university welcomed the ruling, stating that "in a democratic society it
is of great importance that the results of scientific research can be published
".

NXP argues that it will take months to fix the flaw that allows the cards to
be cloned. It has reportedly said that publishing the detailed research will
serve no useful purpose.

A spokesman for Transport for London told the BBC: "Transport for London
remains confident in the security of the Oyster card system.

"Any fraudulent card would be identified and blocked within 24 hours of being
used. Using a fraudulent card for free travel is subject to prosecution and we
would seek to enforce this wherever possible."

The researchers studied the card ahead of its proposed implementation in the
Netherlands.

They found that it was possible to clone the cards, add credit to them and
even jam entry gates, although it is unlikely that cloned cards cause
last
week's problems on the Underground.

The Dutch government has now halted the deployment of the cards after the
researchers showed that they could also be used to gain unauthorised access to
government buildings.